CN210050182U - Torque-adjustable rotary screw device - Google Patents
Torque-adjustable rotary screw device Download PDFInfo
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- CN210050182U CN210050182U CN201920643297.1U CN201920643297U CN210050182U CN 210050182 U CN210050182 U CN 210050182U CN 201920643297 U CN201920643297 U CN 201920643297U CN 210050182 U CN210050182 U CN 210050182U
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Abstract
The utility model discloses a rotatory screw rod device of adjustable moment of torsion includes gear, threaded spindle, screw rod support, flange, ratchet and adjustable torque clutch, and it is fixed that the threaded spindle passes through screw rod support and flange, and the gear cover dress is epaxial at the thread, and the gear passes through adjustable torque clutch and is connected with the transmission of threaded spindle, and the gear still passes through ratchet and the transmission of threaded spindle. The utility model discloses through adjustable torque clutch transmission moment when locking, prevent rotatory tension and be difficult to dismantle and prevent that the motor from transshipping, when loosening, adjustable torque clutch and ratchet play simultaneously, prevent that the friction disc from probably skidding and leading to tearing open the motionless nut.
Description
Technical Field
The utility model belongs to the technical field of mechanical transmission, a concretely designs screw rod.
Background
At present, a plurality of large-scale equipment racks are installed by bolts, jacking screws are adopted for jacking when the large-scale equipment racks are disassembled a little, manual operation is generally adopted, and tooling efficiency is low. For example, the crusher can be disassembled and assembled by adopting a nut and a screw rod, and the relative movement of the nut and the screw rod is used for realizing the clamping and loosening operation of the crusher, so that the disassembly and assembly are completed. However, the crusher frame is very heavy, up to 5-10 tons, and the moment during clamping is too high, which makes it too tight and difficult to disassemble, and the moment required for disassembling should generally be greater than that for assembling. In fact, the screw and nut are matched, the larger torque is required to be applied in the process of disassembly than in the process of installation, the traditional screw cannot control and adjust the transmission torque, and some screws with clutches are the same in torque when screwed and loosened, and can slip when the disassembly resistance is large.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a rotatory screw rod device of adjustable moment of torsion adopts adjustable torque clutch and ratchet transmission moment, passes through adjustable torque clutch transmission moment when required moment is hour, passes through adjustable torque clutch and the common transmission moment of ratchet transmission when required moment is big.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the adjustable torque rotating screw device comprises a gear, a threaded shaft, a screw support, a flange, a ratchet mechanism and an adjustable torque clutch, wherein the threaded shaft is fixed through the screw support and the flange, the gear is sleeved on the threaded shaft, the gear is in transmission connection with the threaded shaft through the adjustable torque clutch, and the gear is further in transmission connection with the threaded shaft through the ratchet mechanism.
Preferably, the adjustable torque clutch comprises a clutch support sleeve, a first thrust bearing, an inner clutch plate, an outer clutch plate, a first spring, a spring support seat, a stop block and an adjusting screw, wherein the clutch support sleeve is sleeved on the threaded shaft and is connected with the gear, the first thrust bearing is arranged below the clutch support sleeve, a second thrust bearing is arranged above the gear, the gear and the clutch support sleeve are fixed on the threaded shaft through the first thrust bearing and the second thrust bearing, a plurality of groups of inner clutch plates and outer clutch plates which are staggered mutually are arranged in the clutch support sleeve, the inner clutch plates pass through the splines of the threaded shaft of the inner spline sleeve, the outer clutch plates are sleeved on the inner hole splines of the clutch support sleeve through the outer splines, the inner clutch plates are in transmission fit with the threaded shaft through the splines, and the outer clutch plates are in transmission fit with the clutch support sleeve through the splines, the lower end of a clutch composed of the inner clutch plate and the outer clutch plate is provided with a first spring, the first spring is supported by a spring supporting seat, the spring supporting seat is sleeved outside the threaded shaft and abuts against a stop block arranged in the threaded shaft, the lower end of the threaded shaft is provided with an adjusting screw, the upper end of the adjusting screw abuts against the stop block, the height of the stop block is adjusted by adjusting the adjusting screw, and therefore the pretightening force of the first spring is adjusted, the friction force of the inner clutch plate and the friction force of the outer clutch plate are adjusted, the friction force transmission torque is changed accordingly, the gear transmission torque is adjustable for the threaded shaft, and the specified clamping force is achieved.
Preferably, the ratchet mechanism comprises a ratchet support, a ratchet pin, a ratchet spring and a ratchet cover, wherein uniformly distributed platform price holes are formed in the circumference of a non-tooth part of the gear, threaded connection holes are formed in the step holes, the center line of each platform price hole does not pass through the center of a gear hole, the ratchet support is installed in the threaded connection holes through threads, the ratchet pin is installed in the ratchet support, the head of the ratchet pin extends to a threaded shaft in the center of the gear, the ratchet spring is sleeved on the tail of the ratchet pin, and the ratchet spring is sealed in the ratchet support through the ratchet cover.
Preferably, the threaded shaft is provided with a ratchet wheel, ratchet wheel grooves are distributed on the ratchet wheel, each ratchet wheel groove comprises a transmission edge, a transition arc and a non-transmission sliding edge, and the transition arc is arranged between the non-transmission sliding edge and the transmission edge; the transmission edge is parallel to the center of the ratchet pin, and the non-transmission sliding edge is perpendicular to the center of the ratchet pin.
Further preferably, axle head characteristic screw thread is equipped with on the threaded shaft upper portion, and the threaded shaft is equipped with the spline characteristic with interior clutch plate complex, and the spline characteristic passes through spline transmission moment with interior clutch plate, and the threaded shaft is equipped with the quad slit with dog sliding fit, and the threaded shaft lower extreme is equipped with the screw hole that is used for installing adjusting screw.
Preferably, the middle part of the threaded shaft is fixed in the screw support through a first bearing, the screw support is a cylindrical cavity with an opening at the lower end and a side opening, the lower end of the screw support passes through the mounting flange, the lower end of the threaded shaft is mounted in the flange through a second bearing, and a spacer bush is arranged between the second thrust bearing and the first bearing.
The technical effects of the utility model: the adjustable torque rotary screw device is adopted to replace a common screw for dismounting the crusher, torque is transmitted through the adjustable torque clutch during clamping, the phenomenon that the screw thread is difficult to dismount or damaged due to over-tightening rotation is prevented from slipping, the motor is prevented from being overloaded, and when the clutch is loosened, the outer clutch plate and the inner clutch plate of the adjustable torque clutch are simultaneously acted through the ratchet pin, so that the friction plate is prevented from possibly slipping to cause the dismounting of the nut, and the dismounting is ensured. The clamping force between the racks is controlled through the adjustable set transmission torque, and the rated clamping force between the racks is ensured. The torque-adjustable rotary screw device can also be used in the technical field of installation and transmission of other equipment, and realizes unidirectional adjustable torque transmission.
Drawings
Fig. 1 is a schematic structural view of the torque-adjustable rotary screw device of the present invention.
Fig. 2 is a cross-sectional view D-D of fig. 1.
Fig. 3 is a schematic gear diagram.
Fig. 4 is a view E-E of fig. 3.
Fig. 5 is a schematic view of a threaded shaft.
Fig. 6 is a sectional view F-F of fig. 5.
In the figure: 3-1 parts of gear, 3-2 parts of threaded shaft, 3-3 parts of first bolt, 3-4 parts of first washer, 3-5 parts of screw rod support, 3-6 parts of first bearing, 3-7 parts of spacer bush, 3-8 parts of clutch support bush, 3-9 parts of first thrust bearing, 3-10 parts of second washer, 3-11 parts of inner clutch plate, 3-12 parts of outer clutch plate, 3-13 parts of first spring, 3-14 parts of spring support bush, 3-15 parts of stop block, 3-16 parts of adjusting screw, 3-17 parts of second bolt, 3-18 parts of flange, 3-19 parts of second bearing, 3-20 parts of second thrust bearing, 3-21 parts of ratchet support, 3-22 parts of ratchet pin, 3-23 parts of ratchet spring, 3-24 parts of ratchet cover, 3-1-1 step price hole, 3-1-2 thread connecting hole, 3-1-3 step price hole central line, 3-2-1 shaft end characteristic thread, 3-2-2 spline characteristic, 3-2-3 square hole, 3-2-4 threaded hole, 3-2-5 transmission edge, 3-2-6 transition arc, and 3-2-7 non-transmission sliding edge.
Detailed Description
The invention will be further elucidated in detail with reference to the drawing.
The structure of the torque-adjustable rotary screw device is shown in figures 1 and 2 and comprises a gear 3-1, a threaded shaft 3-2, a first bolt 3-3, a first washer 3-4, a screw support 3-5, a first bearing 3-6, a spacer 3-7, a clutch support 3-8, a first thrust bearing 3-9, a second washer 3-10, an inner clutch plate 3-11, an outer clutch plate 3-12, a first spring 3-13, a spring support 3-14, a stop block 3-15, an adjusting screw 3-16, a second bolt 3-17, a flange 3-18, a second bearing 3-19, a second thrust bearing 3-20, a ratchet support 3-21, a ratchet pin 3-22, a ratchet spring 3-23 and a ratchet cover 3-24, the middle part of a threaded shaft 3-2 is fixed in a screw support 3-5 through a first bearing 3-6, the screw support 3-5 is a cylindrical cavity with an opening at the lower end and a side opening, the lower end of the screw support 3-5 is provided with a flange 3-18 through a second bolt 3-17, the lower end of the threaded shaft 3-2 is arranged in the flange 3-18 through a second bearing 3-19, a gear 3-1 is arranged on the threaded shaft 3-2, a clutch support 3-8 is sleeved on the threaded shaft 3-2, the clutch support 3-8 is connected with the gear 3-1 through an inner hexagonal cylindrical head screw, a first thrust bearing 3-9 is arranged below the clutch support 3-8, a second thrust bearing 3-20 is arranged above the gear 3-1, a gear 3-1 and a clutch support 3-8 are fixed on a threaded shaft 3-2 through a first thrust bearing 3-9 and a second thrust bearing 3-20, a spacer 3-7 is arranged between the second thrust bearing 3-20 and the first bearing 3-6, and the spacer 3-7 is used for positioning and separating the second thrust bearing 3-20 and the first bearing 3-6; a second washer 3-10 and a plurality of groups of inner clutch plates 3-11 and outer clutch plates 3-12 which are staggered with each other are arranged in a clutch support sleeve 3-8, the second washer 3-10 is sleeved outside a threaded shaft 3-2, the inner clutch plates 3-11 are arranged on a threaded shaft spline of an inner spline sleeve through an inner spline sleeve, the outer clutch plates 3-12 are sleeved on an inner hole spline of the clutch support sleeve through an outer spline, the inner clutch plates 3-11 are matched with the threaded shaft 3-2 through spline transmission, the outer clutch plates 3-11 are matched with the clutch support sleeve 3-8 through spline transmission, the upper end of a clutch formed by the inner clutch plates 3-11 and the outer clutch plates 3-12 is provided with the second washer 3-10, the lower end of the clutch formed by the inner clutch plates 3-11 and the outer clutch plates 3-12 is provided with a first spring 3-13, the first spring 3-13 is supported by a spring supporting seat 3-14, the spring supporting seat 3-14 is sleeved outside the threaded shaft 3-2, the spring supporting seat 3-14 is abutted against a stop block 3-15 arranged in the threaded shaft 3-2, the lower end of the threaded shaft 3-2 is provided with an adjusting screw 3-16, the upper end of the adjusting screw 3-16 is abutted against the stop block 3-15, the height of the stop block 3-15 is adjusted by adjusting the adjusting screw 3-16, so that the pre-tightening force of the first spring 3-13 is adjusted, the friction force of the inner clutch plate 3-11 and the outer clutch plate 3-12 is adjusted, the friction force transmission torque is changed accordingly, the torque transmitted by the gear 3-1 is adjusted to the threaded shaft 3-2, and the specified clamping force is achieved. The specific transmission path is that a gear 3-1 and a clutch support 3-8 are connected through an inner hexagonal cylindrical head screw, the clutch support 3-8 transmits torque to an outer clutch plate 3-12 through a spline, the outer clutch plate 3-2 transmits the torque to an inner clutch plate 3-11 through the pressing force generated by a spring 3-13, the friction force generated between the outer clutch plate 3-2 and the inner clutch plate 3-11 transmits the torque to a threaded shaft 3-2 through the spline, and a screw support 3-5 is installed on a lower rack of the crusher through a first bolt 3-3 and a first washer 3-4.
The structure of the gear 3-1 is shown in figures 3 and 4, the circumference of a non-tooth part of the gear 3-1 is provided with uniformly distributed price counter holes 3-1-1, threaded connection holes 3-1-2 are formed in the step holes 3-1-1, the center line 3-1-3 of each price counter hole does not pass through the center of a gear hole, a ratchet support 3-21 is arranged in the threaded connection holes 3-1-2 through threads, a ratchet pin 3-22 is arranged in the ratchet support 3-21, the head of the ratchet pin 3-22 extends to a threaded shaft 3-2 in the center of the gear 3-1, the tail of the ratchet pin 3-22 is sleeved with a ratchet spring 3-23, and the ratchet spring 3-23 is sealed in the ratchet support 3-21 through a ratchet cover 3-24.
The structure of the threaded shaft 3-2 is shown in figures 5 and 6, the upper part of the threaded shaft 3-2 is provided with a shaft end characteristic thread 3-2-1, the threaded shaft 3-2 is provided with a spline characteristic 3-2-2 matched with an inner clutch plate 3-11, the spline characteristic 3-2-2 and the inner clutch plate 3-11 transmit torque through a spline, the threaded shaft 3-2 is provided with a square hole 3-2-3 in sliding fit with a stop block 3-15, the lower end of the threaded shaft 3-2 is provided with a threaded hole 3-2-4 for installing an adjusting screw 3-16, the threaded shaft 3-2 is provided with a ratchet wheel, the ratchet wheel is provided with ratchet wheel grooves, the ratchet wheel grooves comprise a transmission edge 3-2-5, a transition arc 3-2-6 and a non-transmission sliding edge 3-2-7, a transition arc 3-2-6 is arranged between the non-transmission sliding edge 3-2-7 and the transmission edge 3-2-5; the driving edge 3-2-5 is parallel to the centre of the ratchet pin 3-22, ensuring torque transmission in the released state. The non-transmission sliding edge 3-2-7 is vertical to the center of the ratchet pin 3-22, when the frame is in a clamping state, the ratchet pin 3-22 slides along the center line at the non-transmission sliding edge 3-2-7, torque is not transmitted, and unidirectional transmission torque is realized.
The adjustable torque rotary screw device is an actuating mechanism, is uniformly distributed on the periphery of a crusher, and is used for locking or loosening an upper frame and a lower frame, so that a motor (or a hydraulic motor) of a protective belt planetary reducer driving device is not overloaded, and is provided with an adjustable torque device, wherein the friction force is a clamping force (the clamping force of a spring for an inner clutch plate 3-11 and an outer clutch plate 3-12) friction coefficient, the friction force can be adjusted by adjusting the spring force, the friction force generated by the friction plates (the inner friction plate and the outer friction plate) is controlled by adjusting the distance of the spring, the friction force of the inner clutch plate 3-11 and the outer clutch plate 3-12 is adjusted, the friction force transmission torque is changed along with the change, the purpose that a gear 3-1 transmits the adjustable torque to a threaded shaft 3-2 is achieved, and the specified clamping force is achieved. The principle of the torque transmission is similar to that of an electromagnetic clutch (when the electromagnetic clutch is electrified, an inner friction plate and an outer friction plate are tightly squeezed, the torque is transmitted, the electromagnetic clutch is not electrified, the inner friction plate and the outer friction plate are open, and the electromagnetic clutch is under no load), and the electromagnetic clutch can always transmit certain torque under the control of a spring. In addition, a ratchet mechanism is provided, which can rigidly transmit torque when in loosening and forcibly loosen the upper frame and the lower frame, and if the ratchet mechanism is not provided, the ratchet mechanism can slip and cannot be detached during loosening.
The utility model discloses in, through ratchet round pin transmission torsion to threaded spindle 3-2, adjustable torque clutch's outer clutch piece 3-12 and interior clutch piece 3-11 play a role all the time, in the locking state, only adjustable torque clutch's outer clutch piece 3-12 and interior clutch piece 3-11 play a role, prevent to rotate too tightly and be difficult to dismantle or damage the screw and smooth. In a loosening state, no ratchet pin 3-22 is added to transmit torque in the loosening state, the friction plate can slip to cause that a nut cannot be dismounted, so that a machine frame cannot be dismounted, the rotating direction of the gear 3-1 is opposite to the rotating direction in the locking state of the machine frame, the ratchet pin 3-22 arranged on the gear 3-1 is clamped in a ratchet groove on the threaded shaft 3-2, the ratchet pin 3-22 drives a straight edge of the ratchet groove on the threaded shaft 3-2 to transmit torque, and the ratchet pin transmits the torque to the threaded shaft 3-2, and an outer clutch plate 3-12 and an inner clutch plate 3-11 of the adjustable torque clutch are simultaneously acted to ensure that the outer clutch plate and the inner clutch plate are dismounted.
The utility model discloses a rotatory screw rod device of adjustable moment of torsion not only is used for breaker frame dismouting, also can be used for other equipment dismouting, further can be used for other equipment that need transmission moment. The embodiment of the present invention should not be taken as the limitation of the protection scope, as long as the simple transformation in the spirit of the present invention all belongs to the protection scope of the present invention.
Claims (6)
1. Rotatory screw means of adjustable moment of torsion includes gear, threaded shaft, screw rod support, flange, ratchet and adjustable torque clutch, characterized by: the threaded shaft is fixed with the flange through the screw support, the gear is sleeved on the threaded shaft, the gear is in transmission connection with the threaded shaft through the adjustable torque clutch, and the gear is further in transmission with the threaded shaft through the ratchet mechanism.
2. The adjustable torque rotary screw apparatus of claim 1, wherein: the adjustable torque clutch comprises a clutch support sleeve, a first thrust bearing, an inner clutch plate, an outer clutch plate, a first spring, a spring support seat, a stop block and an adjusting screw, wherein the clutch support sleeve is sleeved on a threaded shaft and connected with a gear, the first thrust bearing is arranged below the clutch support sleeve, a second thrust bearing is arranged above the gear, the gear and the clutch support sleeve are fixed on the threaded shaft through the first thrust bearing and the second thrust bearing, a plurality of groups of inner clutch plates and outer clutch plates which are mutually staggered are arranged in the clutch support sleeve, the inner clutch plates pass through the splines of the threaded shaft of the inner spline sleeve, the outer clutch plates are sleeved on the inner hole splines of the clutch support sleeve through the outer splines, the inner clutch plates are matched with the threaded shaft through the splines in a transmission manner, the outer clutch plates are matched with the clutch support sleeve through the splines in a transmission manner, the lower end of the clutch formed by the inner clutch plates and the outer clutch plates is provided with the, the first spring is supported by a spring supporting seat, the spring supporting seat is sleeved outside the threaded shaft, the spring supporting seat abuts against a stop block arranged in the threaded shaft, the lower end of the threaded shaft is provided with an adjusting screw, and the upper end of the adjusting screw abuts against the stop block.
3. The adjustable torque rotary screw apparatus of claim 1, wherein: the ratchet mechanism comprises a ratchet support, a ratchet pin, a ratchet spring and a ratchet cover, wherein uniformly distributed platform price holes are formed in the circumference of a non-tooth part of the gear, threaded connection holes are formed in the step holes, the center line of each platform price hole does not pass through the center of a gear hole, the ratchet support is installed in the threaded connection holes through threads, the ratchet pin is installed in the ratchet support, the head of the ratchet pin extends to a threaded shaft at the center of the gear, the tail of the ratchet pin is sleeved with the ratchet spring, and the ratchet spring is sealed in the ratchet support through the ratchet cover.
4. The adjustable torque rotary screw apparatus of claim 3, wherein: the ratchet wheel is arranged on the threaded shaft, ratchet wheel grooves are distributed in the ratchet wheel and comprise a transmission edge, a transition arc and a non-transmission sliding edge, and the transition arc is arranged between the non-transmission sliding edge and the transmission edge; the transmission edge is parallel to the center of the ratchet pin, and the non-transmission sliding edge is perpendicular to the center of the ratchet pin.
5. The adjustable torque rotary screw apparatus of claim 2, wherein: the upper portion of the threaded shaft is provided with shaft end characteristic threads, the threaded shaft is provided with spline characteristics matched with the inner clutch plate, the spline characteristics and the inner clutch plate transmit torque through splines, the threaded shaft is provided with a square hole in sliding fit with the stop block, and the lower end of the threaded shaft is provided with a threaded hole for installing an adjusting screw.
6. The adjustable torque rotary screw apparatus of claim 2, wherein: the middle part of the threaded shaft is fixed in the screw rod support through the first bearing, the screw rod support is a cylindrical cavity with an opening at the lower end and a side opening, the lower end of the screw rod support passes through the mounting flange, the lower end of the threaded shaft is mounted in the flange through the second bearing, and a spacer sleeve is arranged between the second thrust bearing and the first bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920643297.1U CN210050182U (en) | 2019-05-07 | 2019-05-07 | Torque-adjustable rotary screw device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920643297.1U CN210050182U (en) | 2019-05-07 | 2019-05-07 | Torque-adjustable rotary screw device |
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| Publication Number | Publication Date |
|---|---|
| CN210050182U true CN210050182U (en) | 2020-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920643297.1U Active CN210050182U (en) | 2019-05-07 | 2019-05-07 | Torque-adjustable rotary screw device |
Country Status (1)
| Country | Link |
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| CN (1) | CN210050182U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112332062A (en) * | 2020-09-30 | 2021-02-05 | 无锡迈泽科技有限公司 | Automatic assembling equipment for self-locking tuning screw |
| CN114076161A (en) * | 2020-08-13 | 2022-02-22 | 深圳市博思得科技发展有限公司 | Friction moment adjusting mechanism |
-
2019
- 2019-05-07 CN CN201920643297.1U patent/CN210050182U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114076161A (en) * | 2020-08-13 | 2022-02-22 | 深圳市博思得科技发展有限公司 | Friction moment adjusting mechanism |
| CN114076161B (en) * | 2020-08-13 | 2023-08-29 | 深圳市博思得科技发展有限公司 | Friction moment adjusting mechanism |
| CN112332062A (en) * | 2020-09-30 | 2021-02-05 | 无锡迈泽科技有限公司 | Automatic assembling equipment for self-locking tuning screw |
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| CP01 | Change in the name or title of a patent holder |
Address after: 330004 No. 300, Hongwan Avenue, Wanli District, Nanchang City, Jiangxi Province Patentee after: Nanchang Mining Machinery Group Co.,Ltd. Address before: 330004 No. 300, Hongwan Avenue, Wanli District, Nanchang City, Jiangxi Province Patentee before: NANCHANG MINERAL SYSTEMS Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |